UpcGen
Command line utility that prints a random UPC code
Installation
The gem will provide the upc_gen command when you gem install upc_gen on your system.
Usage
Run on command line like upc_gen <optional-number-string><optional-char>
- If a number string is passed, the code before the check digit will end with those digits
- If the string of numbers is followed by a '.', the random code will start with those digits
- If the string of numbers is followed by a '-', a code will be found that ends with those digits, including check digit
Examples:
>: upc_gen 001234
2938210012347
>: upc_gen 001234.
0012348367936
>: upc_gen 001234-
4493664001234
Development
After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and the created tag, and push the .gem file to rubygems.org.
Contributing
Bug reports and pull requests are welcome on GitHub at https://github.com/tomtt/upc_gen. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the code of conduct.
License
The gem is available as open source under the terms of the MIT License.
Code of Conduct
Everyone interacting in the UpcGen project's codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.